Active clinical trials for "Lung Diseases, Obstructive"

The purpose of this study is to prospectively assess the efficacy and safety of spray cryotherapy ablation with the truFreeze System in conjunction with mechanical dilation or debridement for the treatment of clinically significant obstructions of the central airways. The primary effectiveness endpoint is the proportion of subjects with a minimum of 25% improvement in luminal patency following SCT treatment and mechanical intervention 30 days (+/- 5 days) following treatment. Additionally, a primary clinical safety endpoint is the reporting of all adverse events.

Several studies and registries suggested that the concomitant presence of acute coronary syndromes (ACS) and chronic obstructive pulmonary disease (COPD) is significantly associated with poor prognosis. It has been suggested that diagnosis of COPD is frequently missing. Thus, it is plausible that a significant percentage of patients with ACS may have unrecognized COPD. This missing diagnosis may contribute significantly to poor prognosis. The investigators suppose that the concomitant use of peak expiratory flow (PEF) measurement and of Respiratory Health Screening Questionnaire (RHSQ, adapted version) could be useful as screening test for COPD in patient smokers or former smokers admitted to hospital with a diagnosis of ACS. In all screened patients COPD diagnosis will be confirmed (or not) two months after hospital discharge with spirometry. In the same setting of patients, the investigators will characterize the underlying pathological mechanisms, evaluating several inflammation, platelet and endothelial markers.

A Multicenter, Randomized, Controlled Trial to Determine Safety and Efficacy of Pump Assisted Lung Protection (PALP™) for Low Flow Carbon Dioxide (CO2) Removal in Conjunction with Liberation from Mechanical Ventilation Compared to Mechanical Ventilation Alone in Patients with COPD Exacerbation and Respiratory Failure

Remote Health Monitoring (RHM) is the assessment of one's own symptoms at home between doctor visits, using things like at-home breathing tests, electronic diaries to answer questionnaires, and other monitoring devices. The hypothesis of this study is that the health and quality of life of people with COPD who do RHM for one year will be better than people with COPD who do not do RHM. Subjects who are at least 40 years old, have been diagnosed with chronic obstructive pulmonary disease (COPD), also known as chronic bronchitis or emphysema, and are current or former smokers will be invited to participate. This study is paid for by eResearch Technology (eRT). Subjects will complete 2 visits at UCLA, separated by one year of RHM. All subjects will participate in RHM. RHM will involve daily monitoring at home using a few electronic devices: blood oxygen levels, symptoms, medication use, breathing tests, and activity monitoring. Visits will include physical exam and medical history, ECG, questionnaires, breathing tests, and exercise tests.

Patients with both sleep apnea and COPD have overlap syndrome, but their optimal management is not known. We plan to conduct a randomized trial of of bi-level PAP vs. night time oxygen to asses the impact of intervention on cardiac MRI and biomarkers.

This study is intended to determine the safety and tolerance of regadenoson in subjects with asthma or chronic obstructive pulmonary disease.

The purpose of this study is to determine efficacy of MR imaging with hyperpolarized helium-3 gas in COPD patients both before and after treatment.

This study was designed to test the following hypothesis: The 3-min constant rate step test and the 3-min constant rate shuttle walk test will be sensitive to detect improvement in exertional dyspnea following acute bronchodilation in patients with COPD.

Does an oral selenium supplement increase blood levels of antioxidants in patients with established, smoking-related lung disease? Members of our study group recently discovered that elevated levels of the anti-oxidant GPx-1 may be protective against heart disease. We are studying whether selenium supplementation will improve GPx-1 levels.

To demonstrate differences in tidal breathing patterns measured by SLP(Structured Light Plethysmography) between healthy subjects and COPD (chronic obstructive pulmonary disease). The correlation between SLP parameters and standard lung function parameters measured by body box and spirometry will also be assessed. Trends in SLP breathing patterns between the different GOLD (Global Initiative for Chronic Obstructive Lung Disease) stages of COPD, and between those and healthy subjects, will be investigated to assess whether SLP can detect differences between groups.